Introduction to Statistics Unit 1: Milestone 1/
Answered Exam Questions.
Which of these statements best defines a stratified random sample? - Answer: It is a sample
where the population is first broken into groups and then elements are randomly selected, in
proportion, from each group.
Which of the following data types will be continuous? - Answer: The amount of snow that fell
last night.
A study in which results are measured without intervention from the researcher is called... -
Answer: Observational study.
In looking to determine the proportion of students who enjoy science, which of the following
might be a representative sample to take? - Answer: 30 students in the lunchroom.
"Ugh," Daniel says as he notices an office memo on his desk. It had been a fun weekend, and
Monday morning came much too soon. He goes to the kitchen to refill his coffee mug. On the
Page 1 of 7
, way, he runs into Sean, who asks, "How do you feel about the new office dress code?" - Answer:
Open question.
Which of the following is true about CPI, based on the information? - Answer: $100 in 1983
would be equivalent to $172.40 in 2000.
A survey result shows that cell phone usage among teenagers rose from 63% in 2006 to 71% in
2008.
Of the following choices, which statement about cell phone use among teenagers is true? -
Answer: Cell phone usage rose by 12.7%
A pizza owner asked 50 customers to taste a new type of topping and found that 40 people liked
its taste.
Which of these is an example of descriptive statistics? - Answer: 80% of the surveyed customers
like the taste of the pizza topping.
A factory manufactures motorcycles. One of its employees, working in the quality control
department, checks the first 10 and the last 10 motorcycles manufactured in a day.
This is what type of sampling? - Answer: Convenience sampling.
A retail brand plans to open its stores across all cities with a population of more than one
million. To prepare for this, it refers to the past year's census done by the government.
Which statement accurately describes the type of data the retail brand is using? - Answer: The
census is an example of available data because the government provides it.
Page 2 of 7
Answered Exam Questions.
Which of these statements best defines a stratified random sample? - Answer: It is a sample
where the population is first broken into groups and then elements are randomly selected, in
proportion, from each group.
Which of the following data types will be continuous? - Answer: The amount of snow that fell
last night.
A study in which results are measured without intervention from the researcher is called... -
Answer: Observational study.
In looking to determine the proportion of students who enjoy science, which of the following
might be a representative sample to take? - Answer: 30 students in the lunchroom.
"Ugh," Daniel says as he notices an office memo on his desk. It had been a fun weekend, and
Monday morning came much too soon. He goes to the kitchen to refill his coffee mug. On the
Page 1 of 7
, way, he runs into Sean, who asks, "How do you feel about the new office dress code?" - Answer:
Open question.
Which of the following is true about CPI, based on the information? - Answer: $100 in 1983
would be equivalent to $172.40 in 2000.
A survey result shows that cell phone usage among teenagers rose from 63% in 2006 to 71% in
2008.
Of the following choices, which statement about cell phone use among teenagers is true? -
Answer: Cell phone usage rose by 12.7%
A pizza owner asked 50 customers to taste a new type of topping and found that 40 people liked
its taste.
Which of these is an example of descriptive statistics? - Answer: 80% of the surveyed customers
like the taste of the pizza topping.
A factory manufactures motorcycles. One of its employees, working in the quality control
department, checks the first 10 and the last 10 motorcycles manufactured in a day.
This is what type of sampling? - Answer: Convenience sampling.
A retail brand plans to open its stores across all cities with a population of more than one
million. To prepare for this, it refers to the past year's census done by the government.
Which statement accurately describes the type of data the retail brand is using? - Answer: The
census is an example of available data because the government provides it.
Page 2 of 7
